I am running a GW 100. I have always ran high stack temps, 600-800. Anybody have a fix for this?
Steve
Steve
hot stack temps
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ohbie1
Member
From my experience, the best first step is to check the accuracy of the thermometer/sensor you are measuring stack temp with. Yrs. ago I was getting high stack temp measurements with a brand new Tarm supplied thermometer when I read a post by Jebatty that mentioned calibrating your thermometer. I gave it a shot and found the new thermometer was off about 200 deg.
Singed Eyebrows
Minister of Fire
Are you seeing 6 to 800 on the outside of the pipe? If so that means you have approx 1200 to 1600 flue gas temps at pipe center(check accuracy as Frank says). Not so good if readings are accurate. Only thing I could suggest is trying a baffle plate inside the boiler to slow down the flue gas around the exchanger. Is there room over the top of the exchanger? If your Greenwood is in the house you could use a Heatilator to extract heat from the flue gas. The heat will not go into the boiler water though. Randystihlwoody said:
Internal temps, seems to be calibrated, have tried a steel plate on top of stack to slow draft. will try a baffle on top of refactory to try and slow gases.
Steve
Steve
Have you checked/cleaned the HX? I remember some of the GW guys talking about lots of creosote accumulating around the tubes. Maybe some of them would get onto this thread if you added GW 100 to the title.
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